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Looking for a mechanic I can trust for my 92 Lexus SC400. Seeing bad reviews for local dealership garyhathaway@usa.net Any help would be appreciated

Before you go all deep with that stuff, maybe try adding a few bottles of Complete Fuel System Cleaner. Very often the IAC (Idle Air Control) valve tends to stick and not properly regulate idle fuel flow forcing an overfuel issue which could cause your problem. What the IAC does is controls the extra fuel which is added during cold starts (about exactly the same thing a choke did on a carburetor prior to fuel injection). When this valve sticks OPEN, the fuel flow when engine is cold is about right and the car should run fine. However, as the engine warms and if this valve does not close, then extra fuel is being dumped into your combustion chamber even when it isn't needed which causes the fuel smell and stalling. ALL of these codes can certainly be related to this issue so it is well advised to check out the cheapest things that could be wrong before getting into the expensive stuff. Just because an O2 or other sensor is on does not mean that it is broken, rather just doing it's job when it sees things out of skew. This problem is much more prevalent on engines in which people use economy gasoline as those fuels often do not have the additives found in Top Tier fuels. Hope this offers some insight. Denny